"I do miss [Britney and LA]," Lovato told Digital Spy. "We spent a lot of time together and we'd formed those bonds, but it's a new chapter now and I'm excited to start a new experience with new people."

Lovato also revealed that the new auditions are "going really great", adding: "I love the new judges, they're amazing.

"Kelly is so much fun to work with - she's got a great energy about her and we connect really well. It was just an instant, off-the-bat kind of thing. Paulina is doing great as well - she's really, really huge in South America and I'm glad the show is representing that side of things more."

Lovato added that she would love to mentor the girls again, but added: "Who knows, we'll have to see what happens. It feels like a natural fit for me but anything could happen. I'm up for the challenge."